Showing papers on "Bessel filter published in 2022"
TL;DR: Compensation circuit, which can increase electrical length, is the most feasible solution for flexible applications of half-wavelength transmission lines (HWTL) and the Bessel filter, which has smooth group delays without waveform distortion, is selected for the calculation of compensation circuit parameters.
1 citations
TL;DR: In this paper , a single operational transresistance amplifier (OTRA) based realization of second order lowpass (LP), highpass (HP), band‐pass (BP), band-reject (BR), and all-pass (AP) filter and their individual performance analysis: noise, temperature, and worst-case analysis have been presented.
Abstract: In this article, a single operational transresistance amplifier (OTRA) based realization of second order low‐pass (LP), high‐pass (HP), band‐pass (BP), band‐reject (BR), and all‐pass (AP) filter and their individual performance analysis: noise, temperature, and worst‐case analysis have been presented. The proposed circuit can be reconfigured as Butterworth and Bessel filter by changing the values of passive components. The presented filters are suitable for MOS‐C implementation, which facilitates tuning of cut‐off/center frequency and quality factor electronically. The proposed circuits are analyzed theoretically, simulated and experimentally verified in laboratory. All the simulations are performed with CMOS model of OTRA (180 nm) in SPICE and experimentally verified with AD844AN IC. The experimental and simulation results are matching closely. The result obtained from post‐layout simulation of the proposed Butterworth LP filter confirms the feasibility of the design. Finally working of the proposed all‐pass filter is established by the design of a buffer and quadrature oscillator.
TL;DR: In this article , the improved Gaver-Stehfest (G-S) inverse Laplace transform method for arbitrary real-order Bessel function integration is presented by using the asymptotic characteristics of the Bessel functions and the accumulation of integration, and the optimized G-S coefficients are given.
Abstract: The Hankel transform is widely used to solve various engineering and physics problems, such as the representation of electromagnetic field components in the medium, the representation of dynamic stress intensity factors, vibration of axisymmetric infinite membrane and displacement intensity factors which all involve this type of integration. However, traditional numerical integration algorithms cannot be used due to the high oscillation characteristics of the Bessel function, so it is particularly important to propose a high precision and efficient numerical algorithm for calculating the integral of high oscillation. In this paper, the improved Gaver-Stehfest (G-S) inverse Laplace transform method for arbitrary real-order Bessel function integration is presented by using the asymptotic characteristics of the Bessel function and the accumulation of integration, and the optimized G-S coefficients are given. The effectiveness of the algorithm is verified by numerical examples. Compared with the linear transformation accelerated convergence algorithm, it shows that the G-S inverse Laplace transform method is suitable for arbitrary real order Hankel transform, and the time consumption is relatively stable and short, which provides a reliable calculation method for the study of electromagnetic mechanics, wave propagation, and fracture dynamics.
14 Apr 2022
TL;DR: In this paper , the group-velocity of the Bessel-X optical wave-packet can be controlled by arbitrarily-axisymmetric pulse-front deformation.
Abstract: Abstract The group-velocity of the Bessel-X optical wave-packet can be controlled by introducing well-designed arbitrarily-axisymmetric pulse-front deformation, which permits realizing superluminal, subluminal, accelerating, decelerating, and even nearly-programmable group-velocities. To better understand the tunability of the group-velocity, the generation methods of this Bessel-X optical wave-packet and the mechanisms of the tunable group-velocity in both the physical and the Fourier spaces are investigated. We also studied the relationship with the recently-reported space-time optical wave-packet, and the group-velocity-tunable Bessel-X optical wave-packet is a subsection of the space-time optical wave-packet.
TL;DR: In this article , discrete analogues of the index transforms, involving Bessel and the modified Bessel functions, are introduced and investigated, and corresponding inversion theorems for suitable classes of functions and sequences are established.
Abstract: Abstract Discrete analogues of the index transforms, involving Bessel and the modified Bessel functions, are introduced and investigated. The corresponding inversion theorems for suitable classes of functions and sequences are established.